Based on the analysis of the existing process， pilot test is made to investigate the treatment effect of traditional Chinese medicine complex wastewater by hydrolysis acidification and two-stage biological aerated filter（BAF）. Results showthat the effluent COD_Cr，SS and color average values are 80 mg/L，43 mg/L and 35 times；in case when those in infloware 970 mg/L，145 mg/L and 130 times respectively. The effluent quality reaches Class Ⅰ Comprehensive Wastewater Discharge Standard （GB 8978—1996).